Electronic price label system promotional information verifier

A method of ensuring that promotional information for an item obtained from a promotional information file is equal to other promotional information assigned to an electronic price label for the item for display by the electronic price label, comprising the steps of:

• (a) providing an electronic price label data file including a record associated with the electronic price label;
• (b) storing identification information for the item in the record;
• (c) determining a promotional information checksum value for the item from the assigned promotional information;
• (d) storing the promotional information checksum value in the electronic price label data file;
• (e) reading the record in the electronic price label data file to obtain the identification information and the promotional information checksum value for the item;
• (f) reading the promotional information file to obtain the promotional information for the item using the identification information obtained from the electronic price label data file;
• (g) calculating another promotional information checksum value from the promotional information for the item in the promotional information file;
• (h) comparing the one and the other promotional information checksum values to determine whether the one and the other price checksum values are equal;
• (i) if the one and the other promotional information verifiers are different,
• (i-1) assigning the promotional information from the promotional information file to the electronic price label;
• and
• (i-2) instructing the electronic price label to display the promotional information from the promotional information file.

A system for ensuring that promotional information for an item obtained from a promotional information file is equal to other promotional information assigned to an electronic price label (EPL) for the item for display by the EPL, comprising:

• a computer system coupled to the EPL, including a terminal and a storage medium coupled to the terminal;
• wherein the storage medium contains an EPL data file including a record associated with the EPL;
• wherein the computer terminal stores identification information for the item in the record, determines a promotional information checksum value for the item from promotional information displayed by the EPL, stores the promotional information checksum value in the EPL data file, reads the record in the EPL data file to obtain the identification information and the promotional information checksum value for the item, reads the promotional information file to obtain the promotional information for the item using the identification information obtained from the electronic price label data file, calculates another promotional information checksum value from the promotional information in the promotional information file, compares the one and the other promotional information checksum values to determine whether the one and the other promotional information checksum values are equal, and changes the displayed promotional information to the promotional information if the one and the other promotional information checksum values are different.

A method of ensuring that promotional information for an item obtained from a promotional information file is equal to other promotional information assigned to an electronic price label for the item for display by the electronic price label, comprising the steps of:

• (a) reading an electronic price label data file to obtain identification information and the other promotional information for the item;
• (b) reading the promotional information file to obtain the promotional information for the item using the identification information obtained from the electronic price label data file;
• (d) comparing the promotional information from the promotional information file to the other promotional information from the electronic price label data file to determine whether they are equal;
• and
• (e) assigning the promotional information from the promotional information file to the electronic price label if the promotional information from the promotional information file and the other promotional information from the electronic price label data file are different.